Bolt and nut.



R. STAHL & T.'H. HUNTER.

BOLT AND NUT.

APPLICATION 11.21) MAR.6,1908.

Patented Jan. 25, 1910.

I given/tors, M Jim/t5 T/wmao' 1?. Hum! 17y 6km? fltarney fiwwwwwwa Witnesses:

v UNITED STATES PATENT OFFICE.

RUDOLPH STAB]; AND THOMAS H. HUNTER, OF PHTIAADELPHIA, PENNSYLVANIA.

BOLT AND NUT.

specification otLettei-s Intent. Patented Jan. 25, 1910.

Application filed March 8, 1908. Serial No. 419,488.

ticularly relates to means for securing a gudgeon in the end of a spindle or spoo The ob'ect of our invention is to provide a bolt and nut and so look the same to ether that the turning and jarring of the bolt will not loosen the nut.

A further object of our invention is to provide a self-locking nut, which is simple in operation and can be manufactured at a ver low cost.

eferring to the drawings: Fi ure 1. is a vertical sectional view of one en of a spindle, showing a gud eon inserted in the end thereof and secured y our improved locking means; Fig. 2. is a transverse section on line 2-2 Fig. 1; Fig. 3. is a perspective view of the nut, detached; Fig. 4. is a side view of a bolt, showing the nut in section, the parts being adapted for heavy work; Fig. 5. is a perspective view of the nut shown in Fig. 4, detached from the bolt; and Fig. 6. is a pers ective view of the nut which is made in t e form of a split washer, having a struck u edge to form a spring.

In the rawlngs 1 represents one end of the spindle, havin a longitudinal aperture formed in the en thereof to receive the gudgeon 2 and said spindle also has a transverse aperture 3 formed in the cylindrical portion of the spindle and located at a point near the inner end of the gudgeon. The gudgeon or bolt 2 is provided, on its inner end, with annular recesses forming shoulders 5, the planes of which shoulders are at right angles to the longitudinal axis of the bolt or gu geon. The said shoulders take the place of the spiral screw-threads usually out upon bolts.

The nut 6 consists of a metal plate curved to form a cylinder. The edges or ends 7 and 8 of said plate are broug t close to ether so that the recesses 10 and 12, formed in the said edges of said plate, will encircle the end of the gudgeon. A larger aperture 14 is also rovided in the central portion of said pla e, so that the end of the if too lon may pass through said latter 0 enin w ich is of sufficient diameter to a low t e gudgeon to freely pass through the gudgeon,

same without the shoulders on the gudgeon being engaged. p

The udgeon is applied to the spindle in the fol owing manner: The nut is first inserted in the transverse opening 3 in the spindle and held so that the aperture formed by the recesses 10 and 12 in said late, will be in alinement with the end 0 the gudgoon, when it is inserted into the longitudinal aperture formed in the end of the spindle. The idgeon is then driven into the nut, the ends of the plate forming said nut being forced apart so that the adjacent ends .of said plate will ride up over the shoulders formed on the gudgeon and then drop into place in front of said shoulder and tightly encircle the gudgeon at the smallest diameter of the latter, due to the spring in the plate formin the nut.

As shown in .Fig. 1, when the nut is in place the adj accnt ends of the plate forming the nut will naturally take against the vertical plane of the shoulders so that any force tending to withdraw the gudgeon from the spindle will force the edges of the nut tightly against the square shoulder 5 on the gudgeon. As the strain is exerted in such a manner as to force the edges of said nut against the square shoulder of the udgeon, the force will not tend to open t e plate forming the nut against the natural spring of said plate and the latter will only have to have sufiicient spring to hold the weight of itself in place upon the end of the gudgeon.

As shown in Fig. 3, the plate forming the nut has an enlarged central portion 15, to strengthen the same at the point where the opening 14 is made in said plate. The said plate is also provided with enlarged ends 16 and 17 to strengthen the nut at the points where the edges encircle the gudgeon.

In Figs. 4 and 5 a nut is shown constructed for heavy work and in place of havin a single working edge, the nut is provide with enlarged bosses 20 and 21 which have several circular teeth 22 cut therein, ada ted to simultaneous] engage a correspon ing number of shoul ers on the bolt. As shown in Fig. 5 the enlarged bosses 20 and 21 of said nut are made in two sections, which a spring plate isprovided with an aperture 14,

of larger diameter than the bolt so that the said bolt may pass freely through the same.

Fig. 6 illustrates a different manner ofconstructin the nut in which the plate is in the form 0 a washer, divided into two sections 24 and 25. A struck up edge 26 is provided which acts as a spring and tends to hold the two sections ofthe washer together. This form may be used to advantage for light work where a small nut is required.

Having thus described our invention we claim and desire to secure by Letters Patent. 1. In a device of the character described, the combination of a bolt, a plurality of annular projections formed onsaid bolt, said projections having one face at approximately right angles to the length of said bolt, and said projections having the other surface beveled, a cylindrically curved spring plate having its end ed es adjacent to each other, said end edges 0 said spring plate having cameos curved recesses formed therein, said s ring plate adapted to be forced over the sai beveled surfaces of said pro'ections and toxembrace the said bolt and b said projections.

2. In a device of the character described, the combination of a bolt, a plurality of annular shoulders formed upon said bolt, a

e held thereon by.

cylindrically curved spring'plate havin its RUDOLPH STAHL. THOMAS H. HUNTER.

Witnesses: I

M. R. CLEELAND, WM. L. RODNEY. 

